DataGridViewColumnCollection.GetLastColumn 方法

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

傳回顯示順序中最後一個符合所指定篩選條件需求的資料行。

public:
 System::Windows::Forms::DataGridViewColumn ^ GetLastColumn(System::Windows::Forms::DataGridViewElementStates includeFilter, System::Windows::Forms::DataGridViewElementStates excludeFilter);

public System.Windows.Forms.DataGridViewColumn GetLastColumn (System.Windows.Forms.DataGridViewElementStates includeFilter, System.Windows.Forms.DataGridViewElementStates excludeFilter);

member this.GetLastColumn : System.Windows.Forms.DataGridViewElementStates * System.Windows.Forms.DataGridViewElementStates -> System.Windows.Forms.DataGridViewColumn

Public Function GetLastColumn (includeFilter As DataGridViewElementStates, excludeFilter As DataGridViewElementStates) As DataGridViewColumn

參數

includeFilter

DataGridViewElementStates

表示要套用於包含之篩選器的 DataGridViewElementStates 值的位元組合。

excludeFilter

DataGridViewElementStates

表示要套用於排除之篩選器的 DataGridViewElementStates 值的位元組合。

傳回

DataGridViewColumn

顯示順序中最後一個符合所指定篩選條件需求的資料行；如果找不到任何資料行，則為 null。

例外狀況

ArgumentException

至少有一個篩選條件值不是 DataGridViewElementStates 值的有效位元組合。

範例

下列程式碼範例會 GetLastColumn 使用 方法來交換最後一個顯示的資料行和第一個顯示的資料行。

// Swap the last column with the first.
void Button10_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
   DataGridViewColumnCollection^ columnCollection = dataGridView->Columns;
   DataGridViewColumn^ firstDisplayedColumn = columnCollection->GetFirstColumn( DataGridViewElementStates::Visible );
   DataGridViewColumn^ lastDisplayedColumn = columnCollection->GetLastColumn( DataGridViewElementStates::Visible, DataGridViewElementStates::None );
   int firstColumn_sIndex = firstDisplayedColumn->DisplayIndex;
   firstDisplayedColumn->DisplayIndex = lastDisplayedColumn->DisplayIndex;
   lastDisplayedColumn->DisplayIndex = firstColumn_sIndex;
}

// Swap the last column with the first.
private void Button10_Click(object sender, EventArgs args)
{
    DataGridViewColumnCollection columnCollection = dataGridView.Columns;

    DataGridViewColumn firstVisibleColumn =
        columnCollection.GetFirstColumn(DataGridViewElementStates.Visible);
    DataGridViewColumn lastVisibleColumn =
        columnCollection.GetLastColumn(
            DataGridViewElementStates.Visible, DataGridViewElementStates.None);

    int firstColumn_sIndex = firstVisibleColumn.DisplayIndex;
    firstVisibleColumn.DisplayIndex = lastVisibleColumn.DisplayIndex;
    lastVisibleColumn.DisplayIndex = firstColumn_sIndex;
}

' Swap the last column with the first.
Private Sub Button10_Click(ByVal sender As Object, _
    ByVal args As EventArgs) Handles Button10.Click

    Dim columnCollection As DataGridViewColumnCollection = _
        dataGridView.Columns

    Dim firstVisibleColumn As DataGridViewColumn = _
        columnCollection.GetFirstColumn(DataGridViewElementStates.Visible)
    Dim lastVisibleColumn As DataGridViewColumn = _
        columnCollection.GetLastColumn(DataGridViewElementStates.Visible, _
        Nothing)

    Dim firstColumn_sIndex As Integer = firstVisibleColumn.DisplayIndex
    firstVisibleColumn.DisplayIndex = _
        lastVisibleColumn.DisplayIndex
    lastVisibleColumn.DisplayIndex = firstColumn_sIndex
End Sub

備註

顯示順序的最後一個資料行是值最高的 DisplayIndex 資料行，不論資料行是否實際顯示在畫面上。

這個方法可讓您判斷符合指定準則的最後一個資料行，而不需要直接比較索引值。

另請參閱

• DataGridView
• DataGridViewColumn
• DisplayIndex
• DataGridViewElementStates